Cracked screen on Liberated Aria, Noon questionSupport

So, I have a Liberated Aria, I had a friend of mine do it since he knows what he is doing and I'm a total noob when it comes to these kinds of things. I recently dropped my phone and the screen is cracked, I have the Insurance with AT&T so I was thinking if I there is a way to 'un-liberate' the phone or should I claim it as lost/stolen. Any tips/suggestions is greatly appreciated!